On 3/20/15 10:58 AM, Linus Torvalds wrote:
That said, SLAB is probably also almost unheard of in high-CPU configurations, since slub has all the magical unlocked lists etc for scalability. So maybe it's a generic SLAB bug, and nobody with lots of CPU's is testing SLAB.
Evidently, it is a well known problem internally that goes back to at least 2.6.39.
To this point I have not paid attention to the allocators. At what point is SLUB considered stable for large systems? Is 2.6.39 stable?
As for SLAB it is not clear if this is a sparc only problem. Perhaps the config should have a warning? It looks like SLAB is still the default for most arch.
DaveM: do you mind if I submit a patch to change the default for sparc to SLUB?
Now that the monster is unleashed, off to other problems... Thanks, David -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>